389377890 has 48 divisors (see below), whose sum is σ = 1104420096. Its totient is φ = 94394400.

The previous prime is 389377889. The next prime is 389377897. The reversal of 389377890 is 98773983.

389377890 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (389377897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195666 + ... + 197645.

It is an arithmetic number, because the mean of its divisors is an integer number (23008752).

Almost surely, 2^389377890 is an apocalyptic number.

389377890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

389377890 is an abundant number, since it is smaller than the sum of its proper divisors (715042206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389377890 is a wasteful number, since it uses less digits than its factorization.

389377890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393335 (or 393332 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The square root of 389377890 is about 19732.6604896552. The cubic root of 389377890 is about 730.2256698934.

The spelling of 389377890 in words is "three hundred eighty-nine million, three hundred seventy-seven thousand, eight hundred ninety".